Improved poetable eock-deileing machine



Letters Parmi Na 76,279, dated March s1, 186s.

IMPROVED PORTABLE ROCK-DRILBING MGEINE.

dlgs thwile referrer in in time @titers afmtanh mating @mi Itif tige saune.

'ToALL WHoM rr MAY ooNcEEN:

Be it known .that I, WILLIAM WEILER, of Washington, Warren countyNew Jersey, have invented aPortable Rock-Drilling .Machine for quarries, &c. ;v and I do hereby declare the following to Abe a full, clear, and exact description of the same. Y

My invention eonsistsbf a portable rock-drilling machine, fully described hereafter, to be operated' veither by hand or p'ower,'fo`r the'purpose of drilling holes of' moderatcdepth, such as are generally drilled by liandin stone-quarries, for blasting, Sie. I

In order to enable others skilled inthe art t'ofmake and use my invention, I will. now proceed to describe its construction and operation, reference being had to the accompanying .,drawitr'g, which forms a part oi' this specification, and in which:- i

Figure 1 is a frontelevation of my portable rock-drillingmachine for quarries, die'.

Figure 2, a sectional elevation ofthe same.

Figure 3, a sectional plan view onthe line v1 2,- iig. 2.

Figure 4, a sectional plan on' the line 8 4, iig. 2; and

Figure 5, a detached view.

Similar letters reter'to similar parts throughout the/.several views. l The frame'consists of four horizontal' bars, A, connected together, as shown in g. 3, so as to form a base, and of four uprights, B, B1, B2, and Bpsecured to the base, and. connected together at the top by cross-pieces a. The driving-shaft C turns in suitable bearings the opposite uprights, B and B1, and has at one end a pulley,. b, provided with a crank, b', and at the opposite end a pinion, c, gearing into a clog-wheel, c', of a' shaft, D, which/also turns in the opposite uprights. Upon'this latter4 shaft are two pulleys, E and E, connected by endless -bands'ol and d to pulleys'F .and F', hung to a shaft, G f, which turns in'suitable bearings at the upper ends of the uprights B andB. The endless bands CZ and d are connected together byv two plates, e, which are riveted or otherwise secured to`tl1em` at'equal'distances from each other, and to the band, d', are secured two projections, provided with anti-friction rollers f; a dog, g, being also secured 'to the band, 02", at a point nearly opposite to each of the Arolle1sy",'t`or a purpose described' hereafter. .A weight, H, is arranged to slide -in vertical guides, L, secured to the uprights Bzaud B3, and is operated,- as will hehereai'ter` described, by a springcatch or hook7 I, which is hung to it by a pin, h, and projects between the endlessbands d and Z iu the path of the piates e. Two plates, K and K', are connected together, and are secured iniany desired position on the guides 7n, above the weight, by alscrew-rod and'tightening-nut, j, and a pin, y", extends across the recessed portion of the plate K, "as shown in figs. 2 vand 3, for a purpose described hereafter. The drill-rod L,between the uprights B2 and B3, slidesin, and is guided Vby platessk and Z, both of which, as shown in figs. 2 and 5, can be readily detached-from the frame; and to the drill-rod between these guidingplates is secured aratchet-wheel, m, which,

can be adjusted toany position `on the rod by means of a setscrew, m. 'The drill-rod L may beraised `by a bell-crank lever, P, which yis hung to a projection', n, of'the frame of the machine, the'fforked arm of the lever passing around the' drill-rod, beneath Vits ratchet-wheel m, as shown ing. 2, and these forked ends which bear against `the under side of the ratchet-wheelV may be provided with anti-friction rollers, so as netto interfere with the motion of the wheel. The opposite bent arm of the lever passes beneath and is operated by the antifriction rollers fof the endless band, d, as will be hereafter describe-d. A rod, p, having a lug, p', slides in a projection, q, of the upright, B1, and is hungto theouter end of ,an arm, @which is -pivoted to a pr'jection'of the upright, B3, `and a spiral spring, s, upon the rod p, .basa tendency to turnthe arm 1; in theudirection of the arrow 1, iigfll. Two crossed levers, tand tf, are hung to the arLn 7, in such a position .that two of their arms shall embrace andserve as 'pawls for the ratchet-wheel m of' the drill-rod, the opposite armsof the'said levers being connected by'a spiral spring, u, which causes the ends of the pawls to engage withothe teeth of -the ratchet-wheel.

, Operation.

The machine'is placed in the desired'position, upon the rock to be drilled, and is operated either by hand. by means of the tcrank'b orby a belt passing roundtlle pulley b from an adjoining portable engine, the driving1 shaft andthe pulleys E and F turning in theidirection of th'er arrows, iig. 2. The bands d and dtravel together, and at the saine speed,I in the direction of theirarrows, until"one ci' the plates e strkesthe Vspring-hook.v I of the u'eight H. Thelatter is then raised until lthe bevelled end ofthe spring-hook strikes the pin 7" ci' the plateK, which lwithdraws the hookl'from the plate e, und thus releases the weight, which falls 'and strikes the upper end -ci' the vdrill-rod. The endless bonds still'continue to tur-n, andthe-second plate e eatphes and raises the hook I and its weight, but before 'the latter is'released, one of the anti-friction'rollers-f of tbe band d, s'tnikesand turns the bell-crank lever Rand thus raises the lower en d ofthe drill clear of the rock. Then, before the drilll is lowered, one of the dogs g of the hund dstrikes' the lug p. of the rod p, andmoves the latter and the arm 7' in the direction of the arrow 2, fig. `-21,-; The ratchet-wheel in and drill-rod are thus partially turned by the pawl, t, and as soon as the lugp is released, -the second-pawl, t, will, by the 'action of the spring' sof the rod p, be drawnfback, and still fartherturn the ratchet-wheel anddrill-rod. The rollerf then releases the lever P, and the drill-rod falls until it again rests upon the rock, after which the spring-hook I is released by the pinj, and the weight falls upon the drill, thus causing the latter 'to'makea second out. "lhe iveight'is elevated'a third tinie, and the drill raised slightlywnd again turned before lthe weight descends upon it, and this operation is repented until the drill has descended sueiently intothere'ck to render it necessary to raise tl1eratchetwheel, m, which can be readily donenl'ter loosening'the' set-screw, m'.

i When alhole of moderate depth. has been drilled, it becomes necessary to remove the detritus which interferes with the proper working of the drill; to do which, fthe latter must first b e withdrawn, and 'its guidingplatesk and [detached from th'e frame of the machine. After removing the powdered.Y rock, the drill is again inserted into the hole, and i's by means ot' its plates k and properly secured to the frame of the machine, after which the operation is continued until a. hole 'of the desired depth has been drilled. Y

The above machine performs its work quickly, and can readily be removed fromv place to place, its bars A being suliciently extended to give it a. rm fo'undationgand it is especially adapted for use in stone-quarries.

Instan-dot' the extended base, A, the machine may be caused to rest upon 4adjustable legs, hinged to tbeupper portion of the frame; .theadvantage gained by the latter plan beingl thatthe machine can always be maintained in a vertical position upon an unequal foundation, or it may be slightly inclined, when necessary, so as to drill an inclined hole. l i

I claim as my inventiomand desire to securaby Letters Patentm" L IThe dri llrod L, operated by a slidingfweight, H, and raised and partially turned between eaohof the blows of tbe weight by the anti-fric'tion-rollersf and dogs y of theendless bands d and d', .through the medium of the levers and devices, herein described. or their equivalents, all substantially as sind forthe purpose specied.

2. The drill-rod L, secured to the froment' the machine by plates k, and Z in suc'h a manner as to be readily detached from the same, as described.

3. The sliding weight H, and its spring-catch I, elevated`by the platesve of the endless bands LZ and d",

and released bythe pin j ofthe adjustable plate K, in the manner and 'for the purpose specified.

In testimony whereof, l have signed my narn'e to this specication in the presence of two subscribing witnesses. WM. WEILER. Witnesses:

JOHN WHITE;

C. B. PRICE. 

